Sight for firearms.



K, A. BRIA'UNING. SIGHT FOB FIREARMS. APPLIOATION FILED MAY 20; 1913.

070 761 {atented Aug. 19, 1913.

Wumaaes; I'll (167901? Y K. a. 61

Attorney.

COLUMBIA PLANDGRAPN 60.,WASHINQNN. D. c.

KARL AUGUST BRAUNING, or HERSTAL, BELGIUM.

SIGHT FOR FIREARMS.

Specification of Letters Patent.

Patented Aug. 19,1913.

Application filed May 20, 1913. Serial No. 768,797.

To all whom it may concern:

Be it known that I, KARL AUGUST BRZiUN- IN a subject of the Emperor of Germany, and resident of Herstal, in the Kingdom of Belgium, have invented certain new and useful Improvements in or Relating to Sights for Firearms; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the artto which it ap pertains to make and use the same, reference being had to the accompanying drawings, and to letters or figures of reference marked therein, which form a part of this specification.

This invention relates to sights in which the folding rear-sight controlled by a spring, is held in a given position by a slide guided between the grooves of the sight-bed.

Compared with known devices, the invention consists in the absence 011 the slide of any separate part for locking the same in a given position, the said locking being on the contrary brought about by the action of the spring controlled rear-sight itself on the slide.

The drawing shows a construction of the sight in Figure 1 in side elevation with the rear-sight folded down, in Fig. 2 in longitudinal section with the rear-sight partly raised, and in Fig. 3 in end elevation seen in the direction of the arrow X. Fig. 4 is a section on line AB of Fig. 1, Fig. 5 shows various views of the locking slide and Fig. 6 shows the rear-sight in two different views.

The rear-sight 1 is rotatably mounted at 2 on a socket-like bed which is mounted on the gun barrel i. The rear sight can change its position between two lateral walls 5 limited by an oblique edge 6 provided with the usual graduated divisions. A spring 7 has the tendency always to turn the rear sight upward in the direction of the arrow shown. The upper surface of the sight or leaf 1 is provided with rack teeth 8. On the inner side of the lateral walls 5 are arranged grooves 9 with which engage two pins 10 secured to the slide 11. The slide is provided with a rib or tooth 12 engaging with the teeth 8. On its upper surface 14 as well as on its two lateral branches 13, the slide is provided with a milled surface in order to facilitate its manipulation. For the purpose of altering the position of the sight or leaf 1, it is slightly depressed in opposition to the action of the spring 7, and the slide placed on the desired division of the edge 6. The flap is then released, whereupon it is forced upward by the spring 7 in the direc tion of the arrow (Fig. 2) so that the rib or tooth 12 engages between two rack teeth 8, locks the slide and thus prevents the leaf from turning any further in the direction of the arrow. The pins 10 of the slide 11 are introduced into the grooves 9 when the flap is in the lowered position (position in Fig. 1). In order to prevent the slide 11 from coming off too easily from the sight and thus being lost, it is advisable to give the portion 15 of the leaf, through which passes the pivot pin 2, such a shape that the pins can be disengaged from the grooves only in a certain position of the leaf. In the construction illustrated, it is for instance necessary, for the purpose of detaching the slide from the sight, to bring the leaf into the extreme highest position in which the surface 16 of the flap is flush with the lower edges of the groove 9.

I11 addition to the above mentioned advantages, the sight according to this invention has further the advantage that, in the event of the rifle falling on the sight, or of any other shocks against the leaf, the latter can yield, any breaking or bending thus being avoided.

hat I claim and desire to secure by Letters Patent of the United States is:

In a sight, the combination of two lateral walls, with oblique grooves provided in said walls, a sight-leaf rotatably mounted between said walls, a spring turning said sightleaf upward, teeth provided on the upper surface of said sight-leaf, a slide guided between said grooves of the walls and a tooth or rib provided on said slide and engaging with the teeth of said sight-leaf.

In testimony whereof I affiX my signature in presence of two witnesses.

KARL AUGUST BRAUNING.

IVitnesses:

LEONARD LEVA, GEORGES VUNDER HAUPTEN.

(topics of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G.

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